I noticed the same thing and run some debugs on the code and found out the following:
In jquery.pageFlipper.js somehwere around Line ~190 there seems to be a problem with some values:
var left = event.pageX - $(holder).position().left;
While on my Desktop PC, the values return correctly. On the iPad however
both returned solid 0 whenever I tried to flip a page. Thats why it works always to the left and never to the right, as the follwoing if statement always ends up for zero:
var actionDropArea = leftIsActive ? __left__ > options.pageWidth : __left__ < options.pageWidth;
However, I found a stackoverflow Thread talking about this:
I try to trace the bug deeper and implement a hotfix... but I'm not sure if I'm talented enough. Lets see...
If I dont return, I failed.
PS: I had to look up a bugmenot account to tell you this... bastards.